Boiler for gas-making systems.



0. I. TENNEY. f BOILER FOR GAS MAKING SYSTEMS. APPLIOATION FILED APR.19, 1907.

900,230, Y Patented Oct. 6, 1908. 2 SHEETS-SHEET 1.

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G. TENNEY.

BOILER FOR GAS MAKING SYSTEMS.

' L APPLIUATIORFILED 1 .23.19, 1907.

Pqtented Oct. 6, 1908.

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CHARLES 1. TENNEY, or MAsoNoITY, IOWA.

BoILEia FOR GAS-MAKING SYSTEMS.

' No.eoo,23o. Specification a :Applicati'onfile dAprfl19,1907. SerialNo. 369,051.

To all whom it may concern: 7

Be itknown that I, OHARLEsI. TENNEY, of Mason City, Cerro Grordo county, Iowa, have invented certain new andusefullmprovements in Boilers for Gas-Making Systems, of which the following is a specifica tion.

My invention relates to aboiler designed particularly for use in connection with the generator for manufacturing carbureted watergas.

The object of my invention is to .provide a boiler so constructed that it may be utilized for the production of steam independently of the gas generator. if b A further object is to provide a boiler cornposed of separable parts to facilitate repairs.

A further object is to provide a boiler having flues which will be unaffected by the intense heat of the burning gases.

My invention consists generally in various constructionsand combinations all as hereinafter described and particularly pointed out in the claims. I

In the accompanying drawings, forming l part of this specification, Figure 1 is a side -the boiler.

elevation of a boiler embodying my invention. Fig. 2 is a sectional view onthe line g of Fig. 1. Fig. 3 is avertical sectional view showing the interior construction of Fig. 4is a detail view of the upper portion of the boiler showing the valve and the mechanism for operating thesame.

Fig. 5 is a transverse sectional view on the line xac of Fig. 3. l l v In the drawing, 2 represents the u right shell of the boiler having an outward y extending flange at its base secured to a plate 2 by a series of bolts 3. The boilerhas an ash pit 3 and a gas-tight door 4 therefor, and above the ash pit supported upon bars 6 is a grate 5. An air blast pipe'6 extends through the wall of the boiler into the ash pit for the purpose of creating a forced draft under the grate. I

8 is a drum open at one end and fitting over the grate and secured at its lower edge to the shell of the boiler by bolts 9, the. drum being spaced from the shell to form a water reservoir around the fire. The drum has an opening 10 in one side through which the fuel is placed upon the grate. .11 is a head secured by rivets 12 to the upper edge of the drum 8. A ring 13 is fitted into the upper Letters Patent. Patented Oct. 6, 1908.

end of the shell 2 and secured therein by rivets 14, and .a bell-shaped drum 15 is fitted within'said ring and riveted thereto, and is provided at its lower end with a head416 also preferably secured by rivets, and said heads 11 and;16 have holes therein to receive the endsfof the upright flues 17 which are entirely submerged when the boiler is filled. Thedrum 15 has a flaring upper end 18 whereon a dome 19 is removably secured by bolts 19'. An outlet 20 is provided'in one side. of the dome 19 and a valve 21 is arranged to close the open upper end of the said dome and is pivoted at 22 and is operated bymeans of'an arm 23 and a rod 24. This valve controls the opening into the stack 25. i

26 represents a cast iron connection leading from the generator (not shown) to the boiler.

It will be notedfrom the foregoing that the and the dome are removable so that the boiler can be turned down to a horizontal position and the dome and bottom plate detached and then convenient access may be had to both ends of the flues.

' The products of combustion from the burning fuel in the generator will enter the boiler through the connection 26 into the space above the grate and below the submerged flufes. At this oint the unburned fuel gases will be met by t e air blasts from the pipe beneath the grate and the complete combustion of all the fuel gases will take place within the fire box of the boiler and the submerged flues. I have found in practice that the gases from the generator burn with an intense heat in the boiler and that it is necessary to employ submerged flues to render them sufficiently durable. A stack valve at the top of the boiler is left open during this operation so that in case any gases should reach the top of the boiler in an unburned condition they will pass off through the valve into the stack. When the o eration of burning the fuel under forced dra 't has been continued for a sufficient length of time to obtain the desired heat in the generator and generate a sufficient pressure of steam in the boiler, preferably about 150 pounds, the air blasts are shut off and the stack valve in the top of the boiler closed and the steam generated from the burning gases of the fuel used bolts securing the bottom plate of the boiler r i to heat the generator is then turned into the generator to aid in producing the carbureted water gas.

The generator which I employ for this purpose is fully illustrated and described in a companion application of even date here with.

A boiler of this type can be located close to the generator where there will be no delay in the passage of the unburned gases from the generator to the fire box of the boiler.

I claim as my invention:

1. In a water gas producing system, an upright boiler comprising a shell, a series of submerged flues' provided within said shell, a grate located below said flues, a gas intake connection above said grate and an air blast located below said grate, and a stack valve and gas outlet provided above said flues, said stack valve when open permitting the escape of any unburned gases in the top of the boiler and said gas outlet being located below said of a drum located in the upper end of said boiler above said lines and having an open upper end, a bell-shaped dome roniovably mounted on said drum and having an open lower end, a stack valve arranged to close the open upper end of said dome and means for operating said valve, and a gas outlet provided in the side wall of said chamber below said valve, substantially as described.

In witness whereof, I have hereunto set my hand this 5th day of April, 1907.

CHARLES I. TENNEY. Witnesses VJ. O. McELRoY, GUssrE GRIEBILING. 

